20 menit

Standar KompetensiMenerapkan konsep aturan statistika dalam pemecahan masalah

Kompeteensi DasarMenghitung ukuran pemusatan, ukuran letak, dan ukuran penyebaran data, serta menafsirkanya.

Jawablah pertanyaan dibawah ini dengan tepat dan jelas !

1. Jeleskan pengertian Mean , menurut pendapat Anda !Jawab :

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.................................................................................................................................................2. Tentukan Mean dari data berikut ini!

a. 3 5 5 4 2 9 7 8 9 6 7 8 5 9 7 9 3 2 4 2 4 2

b. 1 1 5 3 6 6 7 8 1 2 9 9 7 5 7 6 8 5 5 5 2 6 3 8 7

Penyelesaian :

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Lembar kerja siswa 1

Mata pelajaran : Matematika

Nama :

NIS :

Kelas :

3. Tentukan Mean dari data pada tabel dibawah ini dengan menggunakan metode simpangan rata-rata!

Penyelesaian :

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4. Tentukan Mean dari data pada tabel dibawah inidengan menggunakan metode titik tengah!

Nilai Ulangan Frekuensi

30 - 4041 – 5152 – 6263 – 7374 – 8485 - 95

36812106

Jumlah 45

Skor Banyak Siswa

40-49

50-59

60-69

70-79

80-89

90-99

1

4

8

14

10

3

Penyelesain :..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

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